I need help in a decision of these August RPGs

[forevercloud3000]

Disgaea 3 most def!
That game is going to be insane. If it is anything like the games before it it will be equally hilarious as it is fun to play. The game will also most definitely last you longer then any tales game or too human for that matter. Too Human's scores are saying it is very sub-par so far(IGN,GI,1up all reviewed it).
Tales looks to be ok though, you can try that later down the line, or wait for reviews.